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Potential Report Format for Analyses of the Windeys or Flappers

Windeys are pieces of "tatter cloth" hung in the field and forest to integrate the wind received at a site.

Official Report - A Cumulative Wind Analysis

This is your report of flapper set Number .

The reported date of placement was .

The reported date of removal was .

The total time in place was minutes or seconds ( . hours).

The natural logarithm (log to base e) of the total seconds is .

The total grams of lost was .

The total area of loss .

The grams and area loss has consistenly been correlated as .

There were flappers analyzed in set Number .

The mean weight loss wass .

The median weight loss was .

The maximum weight loss on any flapper was , Number .

The minimum weight loss on any flapper was , Number , providing a range of loss of grams.

The statistical variance of the population of flappers in set Number is .

If this is a sample of a larger set, the variance is .

The standard deviation of the population of flappers is (that if a sample, ).

The coefficient of variation in weight loss is .

The isopleths, based on the approximate field position of each sample, is shown in Figure .

Equivalent losses of flapper weight have been experienced at:

In average summer conditions wind speeds of

will evaporate gallons per acre liters per ha.

will evaporate gallons per acre

will evaporate gallons per acre

Individual weight losses and scores for set number

Number Weight loss score score

Order a new set of flappers today.

Ten percent of profits on flappers goes directly to research at Virginia Tech on wind and other abiotic factors in wildland systems. (Certification of this for tax relief is available.) Participation in the wildland and natural research of the Dogwood System, Virginia Tech, and others is welcomed. Ask for complete information or call .

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Last revision January 17, 2000.